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Measurements on anisotropy of angular distribution for the backscattering electron emission on copper monocrystals
Author(s) -
Bauer H.D.
Publication year - 1980
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19800150519
Subject(s) - angular resolution (graph drawing) , electron , azimuth , anisotropy , atomic physics , perpendicular , resolution (logic) , copper , spectrometer , optics , materials science , physics , nuclear physics , geometry , mathematics , metallurgy , combinatorics , artificial intelligence , computer science
During the perpendicular bombardment with 25 keV primary electrons the azimuthal and polar angular distribution are measured of those backscattered electrons which escape from the low index surfaces of a copper monocrystal. A movable electron spectrometer operates as a detector with the energy resolution of Δ E / E ≈ 10 −3 and the angular resolution of Δθ = 0.5°. The observed angular distribution proves congruously with large angle Kikuchi reflection diagrams, the representation of which at metallic surfaces was successful as yet only for oblique incidence. The connection between escape direction and energy loss and also the influence of covering layers are investigated.